ICAO Airline Designator & Telephony
NASA MARS
GROUP ONE, INC. D/B/A TEXAS AIR CHARTERS (DENTON, TX)
UNIVERSITY OF OKLAHOMA, DEPARTMENT OF AVIATION (NORMAN, OK)
PATTERSON AVIATION COMPANY (SACRAMENTO, CA)
CAPE CENTRAL AIRWAYS, INC. (CAPE GIRARDEAU, MO)
AIRSHARES ELITE (ATLANTA, GA)
